Nigeria's business capital, Lagos, has banned motorcycles and tricycles - the city's most common forms of transport, from its major roads.

The Lagos state government said motorcycles, locally referred to as okadas, and tricycles, known as kekes, will not be allowed in the state capital Ikeja, Lagos Mainland, Lagos Island, Apapa, Surulere and Eti Osa areas.

City official Gbenga Omotoso said the ban is as a result of deaths and disorderliness caused by the motorcycles and tricycles.

The ban takes effect on 1 February and will be enforced on all major highways and bridges.

The state government said the ban will extend to other areas after an impact assessment has been done.

Nigerians online have protested against the ban, with some saying motorcycles help them beat the heavy traffic in Lagos.